function showSizeOptions()
{
	var typeElement = document.forms[0].elements['type'];
	var garmentTypeID = typeElement.options[typeElement.selectedIndex].value;
	var sizeElement = document.forms[0].elements['size'];
	var sizeOptions = sizeElement.options;
	var className = 'type:' + garmentTypeID;
	var hideOthers = false;
	for ( var i = 0; i < sizeOptions.length; i++ )
	{
		var sizeOption = sizeOptions[i];
		sizeOption.style.display = 'block';
		if ( sizeOption.className )
		{
			var isRestricted = sizeOption.className == className;
			if ( isRestricted )
			{
				hideOthers = true;
			}
			else
			{
				sizeOption.style.display = 'none';
			}
		}
	}
	if ( hideOthers )
	{
		for ( var i = 0; i < sizeOptions.length; i++ )
		{
			var sizeOption = sizeOptions[i];
			if ( sizeOption.value != 0 && !sizeOption.className )
			{
				sizeOption.style.display = 'none';
			}
		}
	}
}
window.onload = showSizeOptions;